anyone with 24v hooked up strarter ?

[BIGKASH]

someone on screamandfly.com said they have their starter hooked up 24v style, anyone suggest doing this...when i go back and if my motor 200hp merc, turns over slow AGAIN. i'm going to try this...thanks<br /><br />p.s bob serger ROCKS !!!

 

[BIGKASH]

Re: anyone with 24v hooked up strarter ?

:EDIT: THATS BOB "SEGER"

 

[dkondelik]

Re: anyone with 24v hooked up strarter ?

Bigkash,<br /><br />How do you spell h..shshshsh?<br />I would be extremely sceptical of long term success with this approach. If the starter is designed for 12V operation, I GUARENTEEEEEEE,.... that it'll spin like a top, with 24V on it HOWEVER,...... I'd just about bet the farm that it WONT live long. Maybe not even through the first start.<br /><br />If I=v/r holds and v goes from 12 to 24, then your pumping twice the designed current through the windings. and with P(power) = (I^2)*R, and new I = 2* old I, your power dissipation will be 2^2 or 2*2 or 4 times the amount of power that the starter was designed for. <br /><br />Might, could be that you've got a bad winding on the existing starter.<br /><br />Anyway, I wouldn't risk it (24V).<br /><br />Good Luck<br />HAVE FUN!

 

[SpinnerBait_Nut]

Re: anyone with 24v hooked up strarter ?

Not only what klondike said, but what about the charging part.<br />It would be putting extra load on it too.<br /><br />I would check the starter and see if it's bad(Dragging).<br /><br />Sounds like it to me.<br /><br />Maybe a bad or not big enough battery.<br /><br />You are just taking a chance of overloading things by hooking up 24V to a 12V system.

 

[BIGKASH]

Re: anyone with 24v hooked up strarter ?

Thanks, i'm not gonna try it

 

[NathanY]

Re: anyone with 24v hooked up strarter ?

You can infact hook up a starter to two batteries, just dont hook them up for 24v, connect them in a parallel circuit so that you have 12v 1200 CCA, instead of 24v. Very easy to do, will not hurt your starter. Have been doing that on my trolling motor, and my 115 since I have had them.

 

[BIGKASH]

Re: anyone with 24v hooked up strarter ?

so youre saying that a parallel circuit increase cca but not volts? i understand the volts part, but how does it increase amps/cca ?<br /><br />the only plus to a parallel circuit with two batteries is more "reserve" time, right ?

 

[dkondelik]

Re: anyone with 24v hooked up strarter ?

Ouch ! <br />Guyz! Dang it! I pulled a loab on the last 'planation. Now my bainz broke.<br /><br />OK lets give it-a-go <br />Yup, sure can parallel 'em. I've never done it but it makes sound sense. I would try it with diode isolation tween the bats though. Else, there are commercially availble balancers for tying two batteries togther. I dont know what sort of semi-condutor, if any, are used in these.<br /><br />Nathan, are your bats hardwired together? Enquiring minds want to know.<br /><br />Anyway, to your last question. In an ideal world, no I/R losses, no contact losses, and perfect conversion at the load, then YUP, all yer gunna get is longer tollin time.<br /><br />But, as we might suspect, the world's not quite a pefect place. What, with I/R Copper losses, termination resistance, power disipated as heat rather then thrust, not to mention source resistance in the batteries, well,... things add up. <br /><br />The short version, I bet you see, hear and feel the difference.<br /><br />This touches on your original question. What kind of shape are your Bat terminals, Cables, Solenoind connections in? THESE could also be major contributors to your problem

 

[NathanY]

Re: anyone with 24v hooked up strarter ?

I dont know how it is done, my dad did it when I got the boat, because I am poor, I can not afford a 24v trolling motor, so he wired up the batteries and said that it is still 12v but the trolling motor will last alot longer, and it does, now I can run it for 3 week-ends before I have to recharge, instead of 1 weekend ( I slow troll with electric motor). <br /><br />As for the engine batteries, that is done like that, for lights and what not, the starter does spin faster, but it is mainly done for the lights for night fishing. They are indeed hard wired with nothing in between them except copper wire. I guess the engine charges both batteries, because I have never charged them, Both batteries are exactly the same, my dad told me that this would not work unless they where. Both Interstate Marine Cranking.